Source : Free On-Line Dictionary of Computing

room-temperature IQ
     
         (IBM) 80 or below.  Used in describing the expected
        intelligence range of the {luser}.  "Well, but how's this
        interface going to play with the room-temperature IQ crowd?"
        This is a much more insulting phrase in countries that use
        Celsius thermometers.
     
        See {drool-proof paper}.
     
        [{Jargon File}]
     
        (1996-04-06)